This paper proposes a compensator for the dynamic hysteresis of a piezostack actuator. It consists of two components: a rate-independent hysteresis compensator and a nonlinear filter. The compensator is formulated based on a novel rateindependent hysteresis model, whereas the filter is obtained adaptively using the recursive least square algorithm. In order to demonstrate the effectiveness of the proposed model, control performances are experimentally evaluated in time domain with different input voltage waveforms: fixed-frequency and varying-frequency sinusoidal waveforms. Moreover, a comparison between the dynamic model and the rate-independent one is undertaken. It is shown that the proposed dynamic model can provide much better accuracy than the rate-independent one.

Date Published: 27 April 2011
PDF: 8 pages
Proc. SPIE 7977, Active and Passive Smart Structures and Integrated Systems 2011, 79771W (27 April 2011); doi: 10.1117/12.880383

Published in SPIE Proceedings Vol. 7977:
Active and Passive Smart Structures and Integrated Systems 2011
Mehrdad N. Ghasemi-Nejhad, Editor(s)